No overloads for "raises" match the provided arguments: Type[Exception]

[cdonnellytx]

Getting a false positive of No overloads for "raises" match the provided arguments" if I pass type(exception) to a method, whereas using an intermediate variable does not raise the error.

Environment data

• Language Server version: 2021.2.4, 2021.2.5-pre.1
• OS and version: Windows 10 20H2 (19042.804)
• Python version (& distribution if applicable, e.g. Anaconda): Python 3.8.6

Expected behaviour

Neither line should show an error.

Actual behaviour

pytest.raises(type(exception)) is flagged as an error, pytest.raises(exception_type) is not.

Logs

Background analysis message: setFileOpened
Background analysis message: getDiagnosticsForRange
[FG] parsing: d:\temp\foo.py (53ms)
[FG] parsing: c:\Users\x\.vscode\extensions\ms-python.vscode-pylance-2021.2.5-pre.1\dist\typeshed-fallback\stdlib\builtins.pyi [fs read 1ms] (166ms)
[FG] binding: c:\Users\x\.vscode\extensions\ms-python.vscode-pylance-2021.2.5-pre.1\dist\typeshed-fallback\stdlib\builtins.pyi (30ms)
[FG] binding: d:\temp\foo.py (1ms)
Background analysis message: analyze
[BG(1)] analyzing: d:\temp\foo.py ...
[BG(1)]   parsing: d:\temp\foo.py (9ms)
[BG(1)]   binding: d:\temp\foo.py (0ms)
[BG(1)]   checking: d:\temp\foo.py (8ms)
[BG(1)] analyzing: d:\temp\foo.py (19ms)
Background analysis message: getDiagnosticsForRange
Background analysis message: getSemanticTokens
Background analysis message: getSemanticTokens
Background analysis message: getDiagnosticsForRange
Background analysis message: resumeAnalysis
Background analysis message: getDiagnosticsForRange
Background analysis message: getDiagnosticsForRange
Background analysis message: getDiagnosticsForRange

Code Snippet / Additional information

NOTE: test block simplified for sample

import pytest

exception = Exception("foo")
exception_type = type(exception)

with pytest.raises(type(exception)):
    pass
with pytest.raises(exception_type):
    pass

[erictraut]

Thanks for the bug report. I'm able to repro the problem. I'll investigate further.

[erictraut]

This will be fixed in the next release.

[jakebailey]

This issue has been fixed in version 2021.3.0, which we've just released. You can find the changelog here: https://github.com/microsoft/pylance-release/blob/main/CHANGELOG.md#202130-3-march-2021